The noble gases heavier than air are
A. Ar
B. He
C. Ne
D. Kr.
1 Answers
Talk Doctor Online in Bissoy App
Which of the followng noble gases has the highest positive electron gain enthalpy ?
Correct Answer - D Neon has maxium `(Delta_(eg)H)` value `(+116 " kJ mol"^(-1))`
2 Answers 1 views
Which of the following noble gases has an unusual property of diffusing through the materials such as rubber, glass or plastic ?
Correct Answer - A Helium (He) being the lightest among the noble gases, has this property which is not shown by other members of the family.
2 Answers 1 views
The noble gases have close shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nobl
Correct Answer - A Argon checks the reactivity of metals towards oxidation by providing an inert atmosphere.
2 Answers 1 views
Noble gases were considered inert before 1962. Prior to this, Bartlett and Lohmann had previously used the highly ionization energy of `O_(2)` is `116
Correct Answer - C It is the correct ratio.
2 Answers 1 views
If the atomic masses of C and S are 12 and 32 respectively, then atom of S is how many times heavier than an atom of carbon ?
Correct Answer - c For `""_(6)C^(12)` Proton =6 electron = and neutron = 6 For `""_(6)C^(14)`
2 Answers 1 views
Which of the following statements concerning Noble gases in incorrect ?
Correct Answer - C Noble gases exist as monoatomic gases and not as diatomic molecules.
2 Answers 1 views
Among noble gases, only xenon reacts with flourine to form stable xenon fluorides, because xenon
Correct Answer - B Xenon has lowest ionisation energy so it has some tendency to loose electron and fluorine is the strongest oxidising agent.
2 Answers 1 views
The high ionisation potential of noble gases is due to :
Correct Answer - B These have stable `ns^(2)np^(6)` configuration so these have no tendency to loose electron and hence these have highest ionisation energy.
2 Answers 1 views
The electron affinity of Noble gases is
Correct Answer - C Zero because these have stable `ns^(2)np^(6)` electronic configuration so have no tendency to add electron.
2 Answers 1 views
Which of the following statements regarding noble gases is false ?
Correct Answer - C The noble gases are only slightly soluble in water. Their solubility increases from He to Rn.
2 Answers 1 views